Practice what he Preaches

Brown Swiss · Jul 24, 2017

Now growing up my father kept a good eye on me and instructed me how to do things, one of those things was telling me not to ram a hydraulic cylinder to the end! Okay was always careful not to do that, well today while hauling fill in (shale rock from along side of the road) he came back and said the cylinder started leaking at the end that is welded on! I had to weld part of it last year cause he cracked open, so i looked at him and had to ask. Are you letting it ram to the end? Ya he goes!I said don't do that, you told me when I was younger not to do that, he looks at me and said, I did? LOL

kcm.MN · Jul 24, 2017

Wife catches me in similar ways. Seems I can't remember my own words and thoughts anymore.

JMS/.MN · Jul 24, 2017

Of course I always run the cyl to the end...plowing, discing, field cultivator, field chopper, everything. I can"t imagine ever feathering a cyl...for what? They are made to extend to the max, and then the relief valve kicks in. That"s what it is for.

K Effective · Jul 24, 2017

Well, Brown Swiss, I remember well the year Dad was helping me spread manure- we were using a newer-to-us JD model N spreader. Beaters were PTO driven, the apron was ground driven. The first time he came back from the far vineyard to the feedlot with a 10% load shoved tight up against the beaters, I was confused how he could do that. The next time, I was pretty po'd, as it broke a pin and I again had to dig it out by hand. The third time in one afternoon, I knew he was having problems. He so wanted to help, to carry his portion, but he just could not remember to shut the apron off. He was gone about 90 days later, and boy, do I miss him.

Keep a closer eye on your Dad, remember his patience with you when you were young, and tell him how much he means to you.

NCWayne · Jul 24, 2017

Unless your dropping a load, and producing a shock on the end of the barrel when the end of the rod hits it, your not going to damage a cylinder by bottoming it out.

Even if you hit the relief, the cylinder is designed to handle the design pressure of the system, as well as an 'overload' at least as high as what would be caused by the relief setting.

In other words, without that shock load you'll never put any more pressure on the end of the barrel than it was designed to take.

Your biggest problem is either going to be a poor weld from the factory, or the design parameters of the cylinder being exceeded by the design of the machine and/or the cylinder mounts, thus causing the cracking issues.

The same thoughts hold true in running the cylinder out to it's maximum extension. Again, short of a shock load, you should never be able to overload that cylinder on a properly designed machine, with a properly designed hydraulic system.

Eldon (WA) · Jul 24, 2017

I find a hose usually blows before the cylinder is damaged....

sms · Jul 25, 2017

It is not uncommon for people to say leave a cushion of oil at the end of the cylinder so if something happens to shock the cylinder it is not metal to metal. Think of dropping an excavator boom onto a rock with cylinders fully extended.

BarnyardEngineering · Jul 25, 2017

On the original premise, that happens all the time with me and my father.

Back when I was a kid, he wanted things done in a certain way. I would try to use a different technique that achieved the same result with less effort, but that was always good for a tongue-lashing. It was his way, or his way.

Now I catch him all the time doing things *my* way, and when I do I give him a razzing for it, "Hey you used to cuss me out for doing *whatever* that way!" His excuse, "I'm old!" Always good for a laugh.

Brown Swiss · Jul 25, 2017

Always good for a laugh.

That is what is great about him and I, we always can laugh it off, no use getting ornery at each other when life is too short for all that!

paul · Jul 25, 2017

That's cool.

Dad and I struggled a little bit understanding each other, guess we both set in our ways types.... I learned a whole lot from him, but some days......

Paul

moresmoke · Jul 25, 2017

I get asked all the time how far can the relief be turned in safely? The correct answer is none!

used red MN · Jul 25, 2017

I wonder if a SCV (Deere nomenclature) in detent requires full relief pressure to center? I would think not, but I don't know.

Practice what he Preaches

Brown Swiss

Well-known Member

kcm.MN

Well-known Member

JMS/.MN

Well-known Member

K Effective

Well-known Member

NCWayne

Well-known Member

Eldon (WA)

Well-known Member

sms

Well-known Member

BarnyardEngineering

Well-known Member

Brown Swiss

Well-known Member

paul

Well-known Member

moresmoke

Well-known Member

used red MN

Well-known Member

Similar threads